The reason for all these maps is undoubtedly the popularity of George R. R. Martin's A Song of Ice and Fire series of novels and HBO's popular Game of Thrones dramatization of this series. However these interactive maps also owe a huge debt of gratitude to Jonathan Roberts'official maps of Westeros and Essos, based on George R. R. Martin own hand-drawn maps.

Jonathan was commissioned by Random House to create the maps for the published novels. While the interactive maps above don't re-use Jonathon's cartography the underlying maps are obviously influenced by his knowledge of the geography of a Game of Thrones.

Now that the sixth season of a Game of Thrones is upon us there has obviously been a rush of new interactive maps appearing on the scene. Of these new maps I'd pick out Collider's Where is Everybody? map as worthy of mention for attempting to do something a little new.

The Collider map is updated after each episode of the HBO drama to show the last known location of each of the characters. It therefore provides a handy guide to keep track of your favorite characters during season six of a Game of Thrones.